/Engine/Plugins/2D/Paper2D/Source/Paper2D/Classes/PaperTerrainComponent.h
void GenerateFillRenderDataFromPolygon ( const class UPaperSprite * NewSprite, FSpriteDrawCallRecord & FillDrawCall, const FVector2D & TextureSize, const [TArray](API\Runtime\Core\Containers\TArray)< FVector2D > & TriangulatedPolygonVertices )